The process in which the anatomical structure of the locus ceruleus is generated and organized. In mice, the locus ceruleus is a dense cluster of neurons within the dorsorostral pons. This nucleus is the major location of neurons that release norepinephrine throughout the brain, and is responsible for physiological responses to stress and panic. [ http://purl.obolibrary.org/obo/go/references/0000021 GOC:jid GOC:cls GOC:dgh http://openisbn.com/search.php?q=0838580343&isbn=1/ GOC:dph ]